fix(P0): close 15 blockers + add 26 regression tests; fix wiring schema regression

Phase A (security red lines) — CLOSED:
- B8: 3x command injection fixed (execFileSync + args array in CMake/CppBuilder/Cppcheck)
- B6: ToolRegistry permission bypass fixed (real task_scope/profile passed)
- B7: ACTION_BRANCHES this-binding crash fixed (instance method)
- B17: DeveloperLogEncryptor hardcoded 'dev-key' removed (throws if no key)
- B22: CommandRiskAnalyzer 'in' operator bug fixed (includes)
- B1: EventStore.project() transaction handle now passed to all repos
- B2: workspace projection illegal enum fixed (active/merged)
- B4: route_prefix separator unified to '/'
- B5: TaskAttempt column mapping fixed

Other blockers fixed:
- B3: project-level DB schema aligned to db-schema §20 (.air/local, learned_memories)
- B9: cpp.* tools registered through PermissionEngine path
- B11: Scheduler BLOCKED/CANCELLED states added
- B18: CapabilityTrustLevel 5-level enum aligned
- B19: PermissionEngine block/refuse/announce_then_run + grant_scope
- B20: Worker exit code 4 = parent_cancelled
- B24: project_id now randomUUID

Regression fix (introduced by B3 schema refactor):
- wiring.ts capture_debug_record/promote_memory_entry realigned to
  refactored DebugRecord/MemoryEntry interfaces (was compile-level decoupling)

Tests: 128 regression/unit tests pass (22 regression + 3 unit + 3 e2e suites)

Still open (tracked for next round): B10 (INV-2 outbox emit), B12 (Scheduler
event projection), B13 (MainAgent LLM classify), B14 (IPC envelope fields),
B15 (TUI OpenTUI), B16 (api_key strict), B21 (CLI init INV-3), B23 (e2e real),
B25 (MVP tools), B26 (ContextAssembler L6-L9)

Co-Authored-By: Claude Opus 4.8 <noreply@anthropic.com>

packages/runtime/src/agents/main/MainAgent.ts

@@ -10,7 +10,19 @@
 
 import type { SessionID, ProjectID } from '@aircoding/contracts'
 
-export type MainAgentState = 'IDLE' | 'ANSWERING' | 'DELEGATING' | 'DIRECT_MODE' | 'AWAITING_CONFIRMATION' | 'SUMMARIZING'
+export type MainAgentState =
+  | 'IDLE'
+  | 'CLASSIFYING'
+  | 'ANSWERING'
+  | 'DELEGATING'
+  | 'DIRECT_MODE'
+  | 'SCHEDULING'
+  | 'ARCHITECTURE_DESIGNING'
+  | 'CONFIRMING'
+  | 'EXECUTING'
+  | 'INTERRUPTING'
+  | 'ARCHITECTURE_REVISING'
+  | 'SUMMARIZING'
 
 export interface MainAgentConfig {
   session_id: SessionID
@@ -35,6 +47,7 @@ export class MainAgent {
     response?: string
   }> {
     // Classify intent
+    this.state = 'CLASSIFYING'
     const classification = this.classify(message)
 
     switch (classification) {
@@ -83,7 +96,7 @@ export class MainAgent {
    * Handle confirmation from user.
    */
   async handle_confirmation(confirmed: boolean): Promise<void> {
-    if (this.state !== 'AWAITING_CONFIRMATION') return
+    if (this.state !== 'CONFIRMING') return
 
     if (confirmed) {
       this.state = 'DELEGATING'
@@ -100,4 +113,47 @@ export class MainAgent {
     // After summarization completes
     this.state = 'IDLE'
   }
+
+  /**
+   * Handle an interruption at the specified change level.
+   * 'execution' → state EXECUTING
+   * 'design'    → state ARCHITECTURE_REVISING
+   * 'full'      → state ARCHITECTURE_DESIGNING
+   */
+  handle_interruption(change_level: 'execution' | 'design' | 'full'): void {
+    this.state = 'INTERRUPTING'
+
+    switch (change_level) {
+      case 'execution':
+        this.state = 'EXECUTING'
+        break
+      case 'design':
+        this.state = 'ARCHITECTURE_REVISING'
+        break
+      case 'full':
+        this.state = 'ARCHITECTURE_DESIGNING'
+        break
+    }
+  }
+
+  /**
+   * Transition to CONFIRMING state (awaiting user confirmation).
+   */
+  transition_to_confirming(): void {
+    this.state = 'CONFIRMING'
+  }
+
+  /**
+   * Transition to EXECUTING state.
+   */
+  transition_to_executing(): void {
+    this.state = 'EXECUTING'
+  }
+
+  /**
+   * Transition to INTERRUPTING state.
+   */
+  transition_to_interrupting(): void {
+    this.state = 'INTERRUPTING'
+  }
 }